27-03-2021
Chemistry

contestada

13. An atom has a mass number of 12 and an atomic number of 7. How many neutrons does it
contain?
A5
B. 7
C. 12
D. 19
[1 mark]

I want to know if I circled the right one

13 An atom has a mass number of 12 and an atomic number of 7 How many neutrons does it contain A5 B 7 C 12 D 19 1 mark I want to know if I circled the right one class=

Respuesta :

tayogaga tayogaga

27-03-2021

Answer:

5

Explanation:

mass number=no of protons +no of neutron

mass number-atomic number=no of neutron

12-7=5

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